Authorized writing for “write-once” memories
Proc. of a workshop on the theory and application of cryptographic techniques on Advances in cryptology---EUROCRYPT '85
Data Integrty in Digital Optical Disks
IEEE Transactions on Computers
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We consider the following crytographic and coding questions in relation with the use of "write-once" memories (or woms) -How to prevent anyone from reusing the worn (immutable codes). -How to fix the written information in the worn after a given number of generations (locking codes). -How to encode a "credit" in a way that guarantees the user t generations or "purchases" in any possible way and makes it impossible to cheat : i.e. writing on the worn necessarily increases the spent amount of money. The coding will be called "incremental locked".These questions were only raised in [5], where the accent was put on the generation of womcodes possessing an "easy reading-reserved writing" property.